public Object startCreateChild()

in src/java/org/apache/ivy/util/Configurator.java [458:529]
72 lines of code
15 McCabe index (conditional complexity)

    public Object startCreateChild(String name) {
        if (objectStack.isEmpty()) {
            throw new IllegalStateException("set root before creating child");
        }
        ObjectDescriptor parentOD = objectStack.peek();
        Object parent = parentOD.getObject();
        if (parent instanceof MacroDef) {
            if (!"attribute".equals(name) && !"element".equals(name)) {
                MacroRecord record = ((MacroDef) parent).recordCreateChild(name);
                setCurrent(record, name);
                return record;
            }
        }
        if (parent instanceof Macro) {
            MacroRecord record = ((Macro) parent).recordCreateChild(name);
            setCurrent(record, name);
            return record;
        }
        if (parent instanceof MacroRecord) {
            MacroRecord record = ((MacroRecord) parent).recordChild(name);
            setCurrent(record, name);
            return record;
        }
        Object child = null;
        MacroDef macrodef = macrodefs.get(name);
        if (macrodef != null) {
            Macro macro = macrodef.createMacro();
            setCurrent(macro, name);
            return macro;
        }
        Class<?> childClass = typedefs.get(name);
        Method addChild = null;
        try {
            if (childClass != null) {
                return addChild(parentOD, childClass, name, null);
            } else {
                addChild = parentOD.getCreateMethod(name);
                if (addChild != null) {
                    child = addChild.invoke(parent);
                    setCurrent(child, name);
                    return child;
                }
                addChild = parentOD.getAddMethod(name);
                if (addChild != null) {
                    childClass = addChild.getParameterTypes()[0];
                    child = childClass.newInstance();
                    addChild.invoke(parent, child);
                    setCurrent(child, name);
                    return child;
                }
                addChild = parentOD.getAddConfiguredMethod(name);
                if (addChild != null) {
                    childClass = addChild.getParameterTypes()[0];
                    if (Map.class == childClass) {
                        child = new HashMap<>();
                    } else {
                        child = childClass.newInstance();
                    }
                    setCurrent(child, name);
                    return child;
                }
            }
        } catch (InstantiationException ex) {
            throw new IllegalArgumentException("no default constructor on " + childClass
                    + " for adding " + name + " on " + parent.getClass());
        } catch (Exception ex) {
            throw new IllegalArgumentException("bad method found for " + name + " on "
                    + parent.getClass(), ex);
        }
        throw new IllegalArgumentException("no appropriate method found for adding " + name
                + " on " + parent.getClass());
    }